4t57a

Transcript

PARTS LIST/TECHNICAL GUIDE ANALOGUE QUARTZ Cal. 4T57A [SPECIFICATIONS] Cal. No. Item 4T57A •　3 Hands (Hour, Minute, Second) •　Chronograph (Minute, Second, 1/10 second) •　Calendar •　Diameter Outside : Ø29.50 mm (12H - 6H) × 26.00 mm Casing: Ø28.80 mm (12H - 6H) • Height: 4.57 mm Interval of hands movement 1 second Driving system Two pole stepping motor, Step motor 3 pieces Additional function • Electronic circuit reset switch • Train wheel setting device • [Time] Indicated by the Hour, Minute, Second and Calendar • [Stopwatch] Up to 1 minutes in 1/10 second (2 seconds per round) Up to 60 minutes in 1 second split time C r o w n Normal position Free operation 1st click position Date setting(clockwise) 2nd click position Time setting, hand position adjustment / resetting the circuit Loss/gain Monthly rate: Less than 20 seconds (at normal temperature range) Regulation system Nil Gate time for rate measurement Use 10-second gate Current consumption Coil resistance Movement: Less than 2.20 μA Circuit block: Less than 1.04 μA 4002004 (COIL BLOCK A) 1.0 - 1.2 KΩ 4002923 (COIL BLOCK B) 1.28 - 1.48 KΩ Power supply Battery No. SEIKO SR920SW(SEIZAIKEN) Silver oxide battery Battery voltage 1.55 V Battery life Approx. 2 years Number of jewels 0 jewels 1/11 Parts list Cal. 4T57A Order of disassembly: Order of assembly: 1 55 55 1 Types of oil 1 Hour, minute and second hands Oil quantity AO-3 AO-2 Normal quantity 4 Auxiliary train wheel bridge screw 0012 079 5 Date dial guard 0808 368 6 Date dial 7 Auxiliary train wheel bridge 0126 368 9 Date jumper 0810 368 2 Hour, minute and second hands 3 Dial 8 Date corrector wheel 0806 368 10 Date driving wheel 0802 368 15 Chronograph second wheel 0888 009 16 Intermediate chronograph second wheel 0885 002 17 Intermediate chronograph minute wheel 0886 003 18 Chronograph minute wheel 0902 008 19 Intermediate chronograph minute wheel and pinion 0886 001 2 Hour wheel 0271 407 *All parts code are subject to change without notice. 2/11 11 12 Intermediate date driving wheel 0817 368 Intermediate wheel for date corrector holder 0836 369 13 14 Intermediate wheel for date corrector (C) 0737 891 Intermediate wheel for date corrector (B) 0962 891 20 Intermediate chronograph second wheel 0885 002 21 Chronograph second wheel 0888 009 Parts list 25 Cal. 4T57A Switch spring screw 0012 079 29 Train wheel bridge (B) screw 0012 079 30 Train wheel bridge (B) 0125 331 23 Battery 24 Winding stem 0351 892 25 Switch spring screw 0012 079 26 Switch spring 4250 064 27 Circuit block 4004 259 28 battery CONNECTION(-) 4270 358 35 Train wheel bridge (B) screw 0012 079 36 Train wheel bridge (B) 0125 331 37 Step rotor (B) 4146 177 38 Coil block (B) 4002 923 39 Rotor stator (B) 4239 357 40 Fifth wheel and pinion (B) 0701 014 31 Fifth wheel and pinion (B) 0701 014 32 Step rOtor (B) 4146 177 33 Coil block (B) 4002 923 34 Rotor stator (B) 4239 357 *All parts code are subject to change without notice. 3/11 Parts list Cal. 4T57A *1 *1 *All parts code are subject to change without notice. 4/11 41 Train wheel bridge (A) 0125 248 42 Fourth wheel and pinion 0241 178 43 Third wheel and pinion 0231 904 44 Fifth wheel and pinion (A) 0701 904 45 Step rotor (A) 4146 890 46 Minute wheel and pinion 0261 150 47 Center wheel and pinion 0221 157 48 Setting wheel 0281 904 49 Coil block (A) 4002 904 50 Rotor stator (A) 4239 357 51 Train wheel setting lever 0391 368 52 Setting lever 0383 368 53 Yoke 0384 470 54 Clutch wheel 0282 890 55 Intermediate wheel FOR DATE CORRECTOR (A) 0962 890 Parts list Cal. 4T57A l Tools and consumables required for disassembling/reassembling • Movement holder UNIVERSAL MOVEMENT HOLDER (S-682) • Watch oils SEIKO watch oils (AO-3 and AO-2) AO-2 AO-3 Remarks 6 Date dial Position of Color of figure calendar frame Part code Position of crown 0878 220 3 o’clock 3 o’clock Black White 0878 221 3 o’clock 3 o’clock White Black 5/11 Color of background Technical guide Cal. 4T57A The explanation here is only for the particular point of Cal.4T57A. ● Remarks on installing the battery 1) After the battery is replaced with a new one, or after the battery is reinstalled following the repairing procedures, be sure to touch the AC terminal of circuit block and the switch spring with conductive tweezers to reset the circuit as illustrated at right. 2) When the battery is replaced with a new one, the information stored in the built-in IC does not correspond with the time actually displayed. Before using the watch, therefore, be sure to reset the IC following the procedure below. If any of the stopwatch hands should move improperly, also follow the same procedure. 1. Pull out the crown to the second click position. 2. Press the buttons “A” and “B” simultaneously for 2 seconds, and then, release the buttons. The stopwatch second hand turns counterclockwise and stopwatch 1/10 second hand turns clockwise, and then return to where they were. 3. Press button “A” or “B” to reset the stopwatch hands to ”0” position. * By pressing button “A” , set the stopwatch 1/10 second hand. * By pressing button “B”, set the stopwatch second and minute hands. 4. Turn the crown to set the hour, and minute and 24-hour hands to the desired time, and push the crown back to the normal position. 6/11 Technical guide 1 Cal. 4T57A Hour, minute and second hands ● How to install 1. Place the movement directly on a movement holder or the like and press in the hands. 2. Install the hour, minute and second hands at the “12”o’clock position. 3. Install the chrono minute and second hands at the “0”o’clock position. [ Reference ] The power of press hands Minute & Hour Hands < 5kg Second Hand < 5kg Chrono Minute & Second Hands < 3kg 23 BATTERY ● How to remove or install the battery 1) Remove the hook of the switch spring's battery clamp. 2) Insert the battery sideways, and have the hook of the switch spring's battery clamp catch the main plate. 16 Switch spring Battery clamp 1) When Removing Main plate 2) When Installing 31 SETTING stem Push ● How to remove While pushing the indented portion of the arrow, pull out the setting stem. 7/11 Technical guide Cal. 4T57A REMARKS ON INSPECTION AND MEASUREMENT ● How to measure the current consumption for the whole movement 1. To measure the current consumption for the whole movement, connect the (-) probe to the battery connection (-) and (+) probe to the other metal part of the movement, such as battery clamp or circuit block cover. * When measuring the current consumption using the SEIKO digital multi-tester (S-860), use the range of 40 μ A of SUPPLY V (= 1.55 V) & GATE TIME (2 S). 2. Connect the AC component to the positive terminal for 2 seconds until a short circuit occurs to reset the integrated circuit. 3. After the integrated circuit is reset, wait approximately for 10 seconds until a stable measurement is obtained, and then read the measurement. 4. Make sure the read value is less than 2.2 μ A. ● How to measure the current consumption for the CIRCUIT BLOCK alone 1. To measure the current consumption for the CIRCUIT BLOCK alone, connect each probe to the appropriate positive (+) or negative (-) input terminal of the CIRCUIT BLOCK (please refer to “Structure of the CIRCUIT BLOCK” below). * When measuring the current consumption using the SEIKO Multi-Tester S-860, use the range of 4 μ A of SUPPLY V (= 1.55 V) & GATE TIME (2 S). 2. Repeat the same procedures as 2. and 3. of measuring current consumption for the whole movement above. * When measuring the current consumption for the circuit block alone, be careful not to damage or deform the pattern of the circuit block. 3. Make sure the read value is less than 1.04 μ A. 8/11 Technical guide Cal. 4T57A [Structure of the CIRCUIT BLOCK] C=MOS=IC Input terminal (-) Input terminal (+) Output terminal(CG) Crystal unit Output terminal(hand moving) ● Value checking – coil resistance (coil blocks) Check the resistance of each coil block if they are within the range in the following table. COIL BLOCK (A) 4002904 COIL BLOCK (B) 4002923 9/11 1.0 KΩ – 1.2 KΩ 1.28 KΩ – 1.48 KΩ Technical guide Cal. 4T57A DISPLAY AND CROWN/BUTTON OPERATION Stopwatch 1/10 second hand (moves in 1/10 second increments) Minute hand Hour hand Stopwatch minute hand (moves in minute increments) Bu t ton "A" in s topwa tch function: Start/Stop First click: Date setting Second hand Second click: Time setting Stopwatch second hand (moves in second increments) Crown at normal position Button "B" in stopwatch function: Split/Slit release/Reset * The measurement time indicated by the stopwatch hands that move independently of center hands. * Stopwatch 1/10 second hand moves for a first minute. After one minute, it indicates the measurement time when it is stopped. TIME SETTING 1. Pull out the crown to 2. Turn the crown clock- 3. Pull out the crown to the first click. wise until the previous the second click when day’s date appears. the second hand is at the 12 o’clock position. It will stop on the spot and advance the hour and minute hands by turning the crown. (Check that AM/PM is set correctly.) 4. Push the crown back in to the normal position in accordance with a time signal. * When the crown is at the second click position, do not press any button. Otherwise, the chronograph hands will move. * Do not set the date between 9:00 P.M. and 1:00 A.M. Otherwise, the day may not change properly. If it is necessary to set the date during that time period, First change the time to any time outside it, set the date and then reset to the correct time. 10/11 Technical guide Cal. 4T57A HOW TO USE THE STOPWATCH • The measurement time is indicated by the stopwatch hands that move independently of the center hands. • The stopwatch can measure up to 60 minutes in second. (The watch indicates the measurement time in second increments by ignoring off the 1/10 seconds obtained.) Standard measurement Ex) 100m race (Press the buttons in the following order: A START STOP (Finish) A B RESET (Reset to “0’00”) Stopwatch 1/10 second hand A A B Stopwatch minute hand Stopwatch second hand 9.8/10 seconds Accumulated elapsed time measurement Ex) Basketball game (Press the buttons in the following order: A A/A A B START STOP (Start of game) (Time out) RESTART STOP (Restart of game) (Game over) A A RESET A B 5 minutes 10, 8/10 seconds 20 minutes 00 seconds *Restart and stop of the stopwatch can be repeated as many times as necessary by pressing button A Split time measurement Ex) 5,000m race (Press the buttons in the following order: A B/B SPLIT/ START STOP SPLIT RELEASE A B RESET A A B B 2 minutes 50 seconds 15 minutes 10 seconds *Measurement and release of the split time can be repeated as many times as necessary by pressing button B. 11/11 Copyright©2014 by